diff options
Diffstat (limited to 'erts/preloaded/src/prim_inet.erl')
| -rw-r--r-- | erts/preloaded/src/prim_inet.erl | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/erts/preloaded/src/prim_inet.erl b/erts/preloaded/src/prim_inet.erl index fa621681f3..69eed716ff 100644 --- a/erts/preloaded/src/prim_inet.erl +++ b/erts/preloaded/src/prim_inet.erl @@ -1237,7 +1237,8 @@ type_opt_1(buffer) -> int; type_opt_1(active) -> {enum,[{false, ?INET_PASSIVE}, {true, ?INET_ACTIVE}, - {once, ?INET_ONCE}]}; + {once, ?INET_ONCE}, + {multi, ?INET_MULTI}]}; type_opt_1(packet) -> {enum,[{0, ?TCP_PB_RAW}, {1, ?TCP_PB_1}, @@ -1716,11 +1717,14 @@ encode_opt_val(Opts) -> Reason -> {error,Reason} end. +%% {active, once} and {active, N} are specially optimized because they will +%% be used for every packet or every N packets, not only once when +%% initializing the socket. Measurements show that this optimization is +%% worthwhile. enc_opt_val([{active,once}|Opts], Acc) -> - %% Specially optimized because {active,once} will be used for - %% every packet, not only once when initializing the socket. - %% Measurements show that this optimization is worthwhile. enc_opt_val(Opts, [<<?INET_LOPT_ACTIVE:8,?INET_ONCE:32>>|Acc]); +enc_opt_val([{active,N}|Opts], Acc) when is_integer(N), N < 32768, N >= -32768 -> + enc_opt_val(Opts, [<<?INET_LOPT_ACTIVE:8,?INET_MULTI:32,N:16>>|Acc]); enc_opt_val([{raw,P,O,B}|Opts], Acc) -> enc_opt_val(Opts, Acc, raw, {P,O,B}); enc_opt_val([{Opt,Val}|Opts], Acc) -> @@ -1810,6 +1814,14 @@ dec_opt_val([]) -> []. dec_opt_val(Buf, raw, Type) -> {{P,O,B},T} = dec_value(Type, Buf), [{raw,P,O,B}|dec_opt_val(T)]; +dec_opt_val(Buf, active, Type) -> + case dec_value(Type, Buf) of + {multi,[M0,M1|T]} -> + <<N:16>> = list_to_binary([M0,M1]), + [{active,N}|dec_opt_val(T)]; + {Val,T} -> + [{active,Val}|dec_opt_val(T)] + end; dec_opt_val(Buf, Opt, Type) -> {Val,T} = dec_value(Type, Buf), [{Opt,Val}|dec_opt_val(T)]. |